Your right. It is a modern Wing Chun system, actually both are. But its what I have experienced. I took a more traditionalBut Greenlake Martial Arts School doesn't teach Wing Chun as most people think of it. John Beall was a student of James DeMille, who was a student of Bruce Lee's. Bruce Lee taught his modified (and incomplete) version of Wing Chun to James DeMille when he was in Seattle. James Demille developed his own system, Wing Chun Do, independently while keeping much of what he was taught by Bruce Lee and retaining a lot of Wing Chun concepts, but it is much different from Wing Chun. He even uses the title Sijo to reflect this. My understanding of Sifu John Beall's style is that it is his further personal modification of what he learned from James DeMille.
This in no way is intended to comment on the quality or effectiveness of what Sifu Beall teaches, I've been impressed with the few students of both Beall and DeMille that I've met, but it is not Wing Chun in the sense that the vast majority of chunners on here would think of it as, and should probably be taken into account when discussing the topic of 'Why Chunners aren't good fighters'.
Wing Chun class once one time, it was too different, I dropped out.